Remote control apparatus and system thereof

1. A remote control apparatus comprising:

a main body;

a sliding unit that is slidable along a plurality of positions at the main body;

a communication unit to communicate with an external device;

a controller to control a mode of the external device in correspondence to a position among the plurality of positions of the sliding unit with respect to the main body;

a display unit disposed at one surface of the main body to display status information of the external device; and

a manipulation unit to allow a user input to change the status information,

wherein the controller changes the mode of the external device from a power off mode to a power on mode when the sliding unit slides from a first position to a second position of the main body,

wherein the controller displays a status information of the external device on a portion of the display unit corresponding to the first position when the sliding unit slides from the first position to the second position of the main body,

wherein the controller displays operating keys on the manipulation unit when the sliding unit slides from the first position to the second position of the main body, and

wherein the display unit and the manipulation unit take the form of touch screens.

2. The remote control apparatus according to claim 1 , wherein the manipulation unit comprises a plurality of keys to change the status information, and at least one of the keys change different kinds of the status information according to the mode of the external device.

3. The remote control apparatus according to claim 1 , wherein the status information comprises at least one of current status information of the external device and target status information of the external device corresponding to the user input.

4. The remote control apparatus according to claim 1 , wherein the controller changes the mode of the external device from the power on mode to the power off mode when the sliding unit slides from the second position to the first position of the main body.

5. The remote control apparatus according to claim 1 , wherein the controller changes the mode of the external device from a first operation mode to a second operation mode when the sliding unit disposed at the second position of the main body slides to the first position of the main body and slides back to the second position of the main body.

6. The remote control apparatus according to claim 1 , wherein the communication unit communicates wire or wirelessly with the external device.

7. A communication system comprising an electronic device and a remote control device to communicate with the electronic device, comprising:

the electronic device including a first communication unit; and

the remote control device including:

a main body including a display unit,

a sliding unit with a manipulation unit at an outer surface that is slidable along the main body such that the sliding unit overlaps with a portion of the main body at a first position and with at least part of the remaining portion of the main body at a second position,

a controller to generate a command to change a mode of the electronic device in correspondence to the sliding unit sliding from the first position to the second position,

a second communication unit to communicate the command generated by the controller to the first communication unit of the electronic device,

wherein the controller provides status information of the electronic device on the first position of the main body in correspondence to the changed mode of the electronic device,

wherein the controller provides operating keys on the sliding unit in correspondence to the changed mode of the electronic device, and

wherein the display unit and the manipulation unit take the form of touch screens.

8. An external device control method of a remote control apparatus comprising a main body and a sliding unit that is slidable along the main body, the external device control method comprising:

sensing by the controller, a sliding of the sliding unit from a first position where the sliding unit overlaps with a portion of the main body including a display unit to a second position where the sliding unit overlaps with at least part of the remaining portion of the main body;

generating a command by the controller to change a mode of an external device corresponding to a sliding operation of the sliding unit from the first position to the second position;

causing by the controller to display status information of the external device on the first position of the main body in correspondence to the changed mode of the external device; and

causing by the controller to display operating keys on a manipulation unit at an outer surface of the sliding unit in correspondence to the changed mode of the external device,

wherein the display unit and the manipulation unit take the form of touch screens.

9. The external device control method according to claim 8 , wherein the status information is displayed at one surface of the main body.

10. The external device control method according to claim 8 , further comprises causing by the controller to wire or wirelessly transmit the generated command to the external device.